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Service bulletin FSB-261-032

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10042504
Published by NHTSA2011-12-13
Manufacturer's numberFSB-261-032
Manufacturer's date2011-11-01
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

MACK TRUCK: EXPANSION TANKS MAY HAVE PERSISTENT COOLANT LEAKS THAT REQUIRES INSPECTION. EXAMINE EXPANSION TANK FOR BURN HOLE/MARK UNDER PRESSURE CAP THAT ENABLES HOT COOLANT TO ENTER EXPANSION AREA. MODELS CHU, CXU, GU AND TD. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Vehicles listed
MACK CHU2010
MACK CXU2010
MACK GRANITE (GU)2012
MACK GU2010 to 2011
MACK PINNACLE (CHU)2011 to 2012
MACK PINNACLE (CXU)2011 to 2012
MACK TD2012
MACK TD7132010
MACK TD7142010

Listing a model year does not mean every vehicle of it is concerned: the document says which.